Transformer.



H. F. SELINGEE.

TRANSFORMER APPLICATION FILED MAY 21.1h'w'. 916,792. Patented Max:301,1909 Z $HEETS-SHEET 1.

29 Fig.1.

H F SELINGER. TRANSFORMER.

n M APPLICATION FILED MAY 21, 1908. M i. 6 {92.

Patented Mar. 30,1909.

2 SHEETS-SHEET 2.

5 amuk/Wfb/v M/a; W

' gfull, clear, and exact' description as will ena Q My inventionrelates to transformers, and

with small sized transformers known as poturn in the winding andutilizing-the space ferred to the core.

I lamina of the core consists of a T-shaped -Be it-lmo 'n that'I, HUGO.

arm 12 and e tates-i is." i The T shape 1 onrrnn STAT S PATENT .onnion.

HUGO F. SELINGERjOF ST. LOUIS, MISSOURI, ASSIGNOR TO WAGNER ELECTRICMANUFAC- :TURINGQCQMPANY, or s'r. LOUIS, MISSOURI, a CORPORATION or,MISSOURI.

' TRANSFORMER; l

Specification of Letters Patent. Patented March 30, 1909.

immerse.

' V applioation'filed May 21, 1908. Serial No. 434,052

'1 member 10 is provided at. each end'vvith F. Shunenn. a citizen of theUnited. States, -residing at the :members 12 are preferably chamfered,as city'of St. Louis, State of-Missonri, have in shown at 15. In thecomplete transformer rented"; a certain new and useful Transthe membersforming the laminae are assemformer of whichthefollowing 'issuclra bledas shown in Fig. 7, the inner sides of the long arms of the member 12abutting against the outer ends of the short arms 11 of the T -shapedmembers and the short arms 13. of the L-shaped members abuttingagainstthe body portion 10 of the T-shaped To e rlltwhom itmcy'concehi:

able any one skilled in' the art to. whi,oh it. appertains to ma e anduse the same, refer ence being-hadto the accompanying'draW-- ings,.-forming partof this specification.

is particularly'adapted to use in connection laminae are alternatelydisposed as indicated by dottedlines in Fig. 7. tential transformers andused in connection with switch board instruments. My.invention,however,- is not confined to such type of transformers v t The object ofmy invention is-t'o reducethe internal losses of thetransformer by usingthe shortest possible mean length of the laminae may be arranged ingroups of two or more and the groups alternately disposed. In buildingup the ,core, the l..- shaped members 12 are not placed in position butonly the T-shaped members 10 so that the resulting structure is H-shapedin order-that it may receive the insulating cells which will behereinafterdescribed.

In forming the insulating cells for insulating the Winding from thecore, a suitable form such as'shown at 17 in Fig. 3 may be which isusually wasted by being filled with insulation. To this end I soconstruct the core and the insulation between the core and the windingthat the winding may be applied directly to the core'in place of beingfirst wound upon a' form and then transcovering of, textile materialwhich covers the inner side of the faces of the form but not theperiphery.- In the drawings I have shown this as formed of threeseparate sheets, one sheet 18 being-applied to the inner side'and twosheets 19 to the faces,

In the accompanying drawings which illustrate one form of transformermade in accordance with'my invention, Figure 1 is a top plan view of thecomplete transformer, Fig. 2 is a side elevation, Fig. 3 is a viewshowing the manner of forming the'cells for insulating the winding fromthe core, Fig. 4 is an end view of one of the cells, the outeiifwrappingbeing partially broken away, Fig. is a cross-section through the windingand insulation, Fig. (5 is a view showing the manner of stamping .outthe laminae forming the core and Fig. 7 is a view showing one of thelaminae in position.

Like marks of reference refer to similar parts in the several views ofthe drawings.

teferring first to Figs. 6 and 7. Each sheet 18 as shown in Fig. 5.After these sheets have been placed in position and secured 1nany-suitable manner, stri s 20 of the form as best shown in Fig. 3, thesheets 18 and 19 being first coated Witha suitable adhesive material,preferably shellac varnish or other adhesive material which is also agood insulating material. After the insulatingmatcrialis dried so astofirmlyunite the sheets 18 and 19 to the strips 20 the periphery of thetwo cells thus ,formed is divided circumferentially so that the cellswhich are flexible may be removed from-the core or form 17 upon whichthey are made. In order to facilitate this removal as WGll'ilS thewinding of the strips 20,'the form may be made separable along thebroken line ,AI-ArFigB. The form 17 is preferably of the L-shapedmembers'yconsists of aflon fsomewhat-larger in cross section than the;coilto fwhich the insulation is to. be applied member and two L -shapedmembers stamped out of sheet metal. The T-shaped member consists of abody portion 10 forming the inner part of the. core around which thewinding is placed and two short arms 11 projecting therefrom .at righ tanglesf'Each};

members In assembling". the parts, the

Every second. lamina maybe thus alternately disposed or used. To thisform is first applied a sheet suitable textile material are wrappearound.

] notches- Li and the corners of the L-shaped these-sheets 19 being madeto overlap the so that the 5-;trips 20 W to the coil. may be vshown in sgs. {l and o.

A 't'ter the 'l-shnped n n 301's #0 have been assembled as abovedescribed and the lllilh lating cells formed the insnlaling cells areapplied around the central p0 tion. of the core formed by the bodies 10o l? the T-shaped niombe as end the whole structure thus formed isplaced in a suitable lathe and the coil Wound directly in theinsolatingcells. This can be rceilily accomplished as the dividedperipl'icry of the cells can readily be bent in snchposilion not, tointerfere Will: the winding" After the winding ol. the coil is completesthe peripheral part of the cells is oi l'rlapped as shown in Fig. 5, andstrips of textile material 533 are Wound around the periphery atrig iangles to the strips 20 so as to unite the divided portion of the cells.After this is accomplished the l..-sliaped members 12 are placed inposition so as to form removable yolies completing the core. in order lohold the core together, two face plates are provided each of whichcorresponds in form to the shape of the completed core anl lli centralopening 26 to nllon' the windi n; in

project throngh the plate. The plates 25 are clai'nped in positionagainst the feces ot the core by means of bolts 2'? which pi throughsaid plates and tlirongl'i lhe notches let fi'irmed in the -shapcdnicinhiof the core. The bolts are engaged by nuts ll lid taco phi. areprovided with lugs 29 carryin insulating bnshii'igs 3t) tl'irongliWl'iich the "Wires leading to and from the winding inav be sscd. Theplales 253 are also provided w iii'janle feel 31 upon which thecnnpletcd tirnn f nor ress.

will be seen that by my construction the windine may be applied moreclosely to con il portion oil the core than is pos- 3 Ln-tz. coil yvii'aley mind and a 'iplicil to inc com and morec in the inn ol' theWinding, llll llli-i' of turns liner tl inter .el

Sl D il V ovcrlappeiih as; l

hen the cell applied cell being par ed at its periphery, and meansconnecting the parted portion of said cell.

3; ,ln a l'raiisl'orinei: the coi'nbinat'ion With a core of a winding:theii'eon, an insulating ccll compr inc; slrips oi textile nmlcrial torseparating" aid winding and core, said in snlating cell being parted atts periphery, and means for connecting the parted porl ion of said cell.

l. in e l l'illllli rover. the cmiibinaliion with a core he *ingremovable yoh'es, ot' a Winding on said core an insulating; cellseparating :iiid Winding id core, said insulating cell being parted atits periphery, and means for connecting; the parted portion of saidcell.

ln a transformer, the combination with n core 'iai-ingz removable yokes.of a Winding" on said core, an insulating cell comprising strips oftextile material for s )arating said winding and core, said insnlat ngcell being); parted at its periplieryi, and means tor connecting theparted portion of said cell.

(3. ln :1 ransitorn'ier, the combination Wilh a core, of a windingthereon, an insulating cell comprising a sheet of textile material with\rips ot' te 'lile material Wound thcrcon f separating said nii'idingand core said insulating cell being; separated at its periphery and.means for connecting the parted portion of said cell.

i. in a transformer, the combination with a core raving rmnovable yokes,of a Winding an insnlnl-ii'ig cell comprising a sl'ic-elof textilematerial and strips of textile material WOHlKl therein) for separatingsaid r-iinilinnand core said .ii'isnlatii'ig cell being imrted at itsperiphery, and means for connecting' the parted portion of saidinsulation.

ll. l n a trai'is'lornicr, the cmnbination Wit-l1 a core, of a Windiithereon, an insulating cell llezzible material for separating saidwinding;- and core, said cell being separated at its periphery, andstrips of flexible inaterial Wound on said cell to connect the partedportion thereof.

9. in a tini'islorinen the combination with a core l'i:i\lll removableyoliesi of Winding on said "me an insulating: cell :01 prising stripseti lilztile material 1 r separating said winding: and core raid isnlating cell being parfed at its pei'i ihei g and strips of textilematerial vonnd on said first named strips substantially at rig-ht anglesthereto to con met the parted portion of said cell.

l O. in a. transmi ee the combination with 1': core, of a Wlnlllllthereon, an insulating eel: of textile material 3 cell ciinnprisin af-fi Ii .le

, aral'ing said Winding and core,

=.tin cell being: separated atits and ips of textile material said ill"named strips snbstan n an lcs l rein to connect the Cull 11. In atransformer, the combination with a core having removable yokes, of aWinding thereon, an insulating cell comprising a sheet of textilematerial and strips of textile material wound thereon for separatingsaid winding and core, said insulating cell being separated at 1tsperiphery, and -means for A movable yokes, of itWlIldlIlg on said core,an

connecting the parted portion of said cell,

12. In a transformer, the combination with alaminated core havingremovable yokes.

and provided at its side .With notches, of a Winding for said core, aninsulating cell for separating said core and Winding, face plates forholding the laminae of said. core in position, and bolts seated .in saidnotches and holding said face plates.

13. In a transformer, the combination With a core composed ofalternately disposed T- shaped members and L shaped members makinglapjoints therewith and forming removable yokes, of a winding on saidcore,-an insulating cell separating said Winding and core, 'saidinsulating cell being parted atits periphery, and means for 'coimectingthe parted portion of said cell.

14:. In a transformer, the combination with a core comprised ofalternately-disposed T shaped members and L shaped members making lapjoints therewith and forming re movable yokes, of a 'winding'on'saidcore', an insulating cell comprising strips oftextile materialtor separating said winding and core, said insulating cell being partedat its periphery, and means for connecting the parted portion of saidinsulation.

l5. In a'transformer, the combination with a core composed ofalternately disposed T- shaped members and L-shaped members making lapjoints therewith and forming re- 4 insulating cell comprising a sheet ofinsulating material and strips of textile materialwound thereon forseparating said Winding and core, said insulating cell being separatedat its periphery, and meansforcon necting the partedportion ofsaid cell,

16. An insulating cell for transformersv or the like comprising a Woundtubular member of insulating mat'eria-l,said tubular member'having aslit for admitting the conductors. a i v 17. An insulating cell fortransformers or the like comprising a tubular member spirally Wound, ofstrips of insulating material, said strips being adhesively joined toform asingle structure, and saidtubular member having a slit to admitthe conductors In testimony whereof, I have hereunto set my hand andaflixed my seal in the presence of the twosubscribing Witnesses.

HUGO F. SELINGER. [11. s.] lVitnesses: B. M. So'nmonrm'c,

, lJUDWlG' GUTMANN.

